Allow interrupts in cambus read/write_bytes functions.
Allow interrupts in cambus read/write_bytes functions.

* Those are used exclusively by the FIR sensors and not by the main
image sensor, so it's safe (and much faster) to leave interrupts enabled.

openmv/openmv,kwagyeman/openmv,kwagyeman/openmv,openmv/openmv,kwagyeman/openmv,kwagyeman/openmv,iabdalkader/openmv,iabdalkader/openmv,openmv/openmv,iabdalkader/openmv,iabdalkader/openmv,openmv/openmv